BARIUM SULFIDE

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" height=30 BGCOLOR="#006699" TEXT="#080000"> <div> <FONT SIZE="2" COLOR="#FFFFFF" FACE="Arial" ><B>CHEMISTRY SCHOOL</B></FONT><FONT SIZE="2" COLOR="#FFFFCC" FACE="Arial" >   </FONT><FONT SIZE="1" COLOR="#FFFFCC" FACE="Arial" > </FONT> <A HREF="index.htm" TARGET="_top" TITLE="CHEMISTRY SCHOOL"><U>HOME PAGE</U></A>          <A HREF="inorganic_chemistry.htm" TARGET="_top" TITLE="INORGANIC CHEMISTRY"><U>TO THE INDEX OF INORGANIC COMPOUNDS</U></A>             <FONT SIZE="1" COLOR="#DDDDDD" FACE="Arial" >BARIUM SULFIDE </FONT></div> </td> </tr><tr> <td valign="top" height=450 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <I><B> <TABLE BORDER="1" CELLPADDING="2" CELLSPACING="0" WIDTH="758" BORDERCOLORLIGHT="#993380" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 398 ><NOBR><div> <IMG SRC="115dd9f70.gif" border=0 width="217" height="247" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B>CUBIC BARIUM SULFIDE</B></div> <div> <B>32(BaS) =</B><B> 32.BRI + 32.SLF</B><B> </B></div> <div>      BARIUM SULFIDE IS A OFF- WHITE MINERAL .</div> <div>      ITS ALKALINE, BARIUM & SULFUR ATOMS, </div> <div>      FORM INTO, A CUBIC MACRO-MOLECULE, WITH</div> <div>     32 ATOMS, OF EACH, OF THESE TWO ELEMENTS. </div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFFBF0><NOBR><div> <TABLE BORDER="0" CELLPADDING="2" CELLSPACING="1" WIDTH="429" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 174 ><NOBR><div>       <FONT SIZE="2" COLOR="#006699" FACE="Arial" ><B>BARIUM SULFIDE</B></FONT></div> <div>       BARIUM SULFIDE.IS A SOFT WHITE, CUBIC CRYSTAL,</div> <div>       WHEN IT IS FOUND ALONG THE COAST OF NATIONS,</div> <div>       LATER,AFTER BAKING IT FOR 2-6 DAYS, THE SMALLER</div> <div>       DI-BARIUM SULFIDE CRYSTALS,SHOWN RIGHT, FORM. </div> <div>       THE CUBIC CRYSTALS ARE USED, TO MAKE,</div> <div>       OFF-WHITE, PAINT PIGMENT POWDERS FOR,</div> <div>       THE ECONOMICAL PAINTS, THAT GOVERNMENTS USE,</div> <div>       TO PAINT, THEIR SCHOOLS AND HOSPITALS</div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFFBF0><NOBR><div> <TABLE BORDER="1" CELLPADDING="2" CELLSPACING="0" WIDTH="75" BORDERCOLORLIGHT="#993380" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=CENTER BGCOLOR=#FFFFFF HEIGHT= 66 ><NOBR><div> <IMG SRC="113939380.gif" border=0 width="57" height="56" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> </tR> </TABLE></div> <bR> </NOBR></tD> </tR> </TABLE></div> <div> IT IS ALSO USED, IN SCHOOLS, CAFETERIAS AND HOSPITALS,</div> <div> IN THEIR CREAM COLORED, VINYL WALL AND FLOOR COVERINGS,</div> <div> AND IN THE, HARD VINYL, TOP SURFACES, OF CLASSROOM TABLES.</div> <div> THIS USEFUL, NATURAL EARTH SULFIDE, IS FOUND,</div> <div> NEAR LAKE TANGANYIKA AND IN THE PROVINCE OF VENICE, IN ITALY.</div> <div>  DENSITY    =  4.249'111 gr/ cc              HARDNESS = 224 durons</div> <div>  WEIGHT     =  9,420<B>.</B> 567 ugr                     (32 x 169<B>.</B>393 amu)               </div> <div>  MLT. TMP.   =  1,200°C                            DISSOLVES @  =  1,281°C <FONT SIZE="1" COLOR="#660033" FACE="Arial" >       </FONT></div> <div>  Ø = The atoms diameter                       1u = <B>.</B>000'000'1millimeters</div> <div>  1ugr = 10e-24 grams =1<B>.</B>66amu                            </div> </NOBR></tD> </tR> <tR> <tD VALIGN=CENTER HEIGHT= 354 ><NOBR><div> THE BARIUM SULFIDE CRYSTALS ARE MADE OF,</div> <div> SMALLER TETRAGONAL MOLECULES WITH,</div> <div> TWO BARIUM ATOMS & TWO SULFUR ATOMS</div> <div> THAT HAVE CO-VALENT ••2 ELECTRON BONDS.</div> <div> IN SOLUTION, THESE SMALL MOLECULES,</div> <div> FORM INTO THE TWO TYPES OF LARGER</div> <div> MOLECULAR PLATES, SHOWN BELOW RIGHT.</div> <div> WHEREUPON, THE EIGHT SULFUR ATOMS,</div> <div> IN EACH, OF THE LARGER PLATES, BEGIN TO</div> <div> BE ATTRACTED TO, THE SULFUR ATOMS </div> <div> IN NEARBY MOLECULAR PLATES, </div> <div> BECAUSE, ALL THE SULFUR ATOMS, ALSO,</div> <div> HAVE THE ABILITY TO ALSO BOND,  ••4 AND ••6.</div> <div> AS THE LARGE PLATES, FLOW TOGETHER,</div> <div> MANY OF THE BARIUM ATOMS, BOND TO THE</div> <div>         SULFUR ATOMS, ABOVE OR BELOW THEM,</div> <div>         THEREBY MAKING, A LARGE CUBIC CRYSTAL.</div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFFBF0><NOBR><div> <IMG SRC="116da81a0.gif" border=0 width="424" height="282" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> CUBIC CRYSTALA OF BARIUM SULFIDE,  LIKE THE ONE ABOVE,</div> <div> ARE USED TO TINT, LINSEED OIL WHITE PAINTS, </div> <div> THE CREAMY YELLOW COLOR OF THIS PAGE SECTION</div> </NOBR></tD> </tR> </TABLE></B></I></div> <bR> <bR> </td> </tr></table></body>